I found an article online that states for the iTwo:You’ll need to use the free downloadable Capture (Duo) for iPad app in to capture audio input on both of the two available audio channels. PreSonus won’t admit it, but they’ve purposely software handicapped the iTwo so it will only allow one channel of audio recording to take place when you’re using apps other than their own Capture for iPad software. The Focusright Tape app will not capture both channels of audio for example, even though it’s capable of stereo recordings.